The main objective of
this post is to provide readers with basic background knowledge and understanding
of the mechanical, Physical and Chemical properties of materials.
So let us consider first
characteristics of steel and after that we will also consider the various
characteristics of porcelain, polyethylene and glass-reinforced plastic.
Steel
Mechanical properties of steel
Steel have different
type of mechanical properties & these properties are dependent on the
factor that where we are going to use that steel. On the basis of customer
requirement & application areas, there are different grade & types of
steel.
There are main
categories of steel as listed below
- Carbon steel
- Alloy steel
- Stainless steel
- Tool steel
- Galvanized steel
General Mechanical properties of steel
Physical properties of steel
Physical properties of
steel depend on the percentage chemical composition of its concern elements and
process used to produce steel. For example if steel is producing by batch
casting then its surface finish will be poor as compared to steel producing by continuous
casting process.
The main physical
properties of steel are it’s dimensional stability i.e. after long
time the dimension of steel will be same as before.
These days in steel production, production engineer want to add less amount of carbon by removing slag from molten metal bath with the help of lime. Some steel are corrosion resistance such as stainless steel and galvanized steel.
These days in steel production, production engineer want to add less amount of carbon by removing slag from molten metal bath with the help of lime. Some steel are corrosion resistance such as stainless steel and galvanized steel.
Chemical properties of steel
Chemical properties of
steel depend its composition, the main factor in steel is carbon content .if
carbon content is high its means steel is lesser strength & brittle for
example cast-iron. If carbon content is low such as in stainless steel, its shows
that material will have good strength.
C, Si, Mn, Mo, P,
Ni& S
Out of these Ni is main
element of steel and it is costly and cost of steel depends on this element
quantity.
Porcelain
Mechanical properties of Porcelain
Property
|
Quantity
|
Unit
|
Tensile strength
|
40-50
|
Mpa
|
Compressive strength
|
400-900
|
Mpa
|
Bending strength
|
90-140
|
Mpa
|
Physical properties of Porcelain
Property
|
quantity
|
unit
|
Thermal expansion
|
5.5 - 7
|
e-6/K
|
Thermal conductivity
|
2-4
|
W/mk
|
Specific heat
|
0-800
|
J/kg.K
|
Melting temperature
|
1600-1650
|
Degree centigrade
|
Service temperature
|
0-1250
|
Degree centigrade
|
Density
|
2500-3100
|
Kg/m3
|
Water Absorption
|
0-0.5
|
percentage
|
Chemical properties of Porcelain
Porcelain is made by mixing clay with other elements and heating it at higher temperature and after doing this it achieves the qualities like vitreous, glass like quality. Porcelain has following properties as listed below.- Translucent
- Nonporous & hard
Polyethylene
Mechanical properties of polyethylene
- Hard
- Stiff
- Strong & dimensional stable
- Little absorption of water
Physical properties of Polyethylene
- It could be Moulded
- It could be Extruded
- It could be cast in to various shape and sizes
- Cheaper
Chemical properties of Polyethylene
- Good chemical properties – it can’t be attacked by strong acid.
- Good resistant to oxidizing and reducing agent.
- It burns slowly with a blue flame with yellow tip and provides odour of paraffin, it burns continuously after removal of flame source.
- It could be dissolved at high temperatures in aromatic hydrocarbons solvent for example toluene or xylene, or in chlorinated solvents for example Tri-chloro benzene
Glass reinforced plastic
Mechanical properties of glass reinforced plastic
- Tensile strength= 130 kgf/mm2
- Bending strength= 80-120 kgf/mm2
- Modulus of elasticity=4500-5000 kgf/mm2
- Good dielectric properties
- Low density
- Low thermal conductivity
- Less expansion & contraction compared to metal & plastic
Physical properties of glass reinforced plastic
- Flexibility in design
- Cheaper
- Light weight
- Non conductive
- It resistance against temperature is high
- Affordability and Versatility
Chemical properties of glass reinforced plastic
- Good corrosion resistance
- Good resistance of water
- Good resistance to ultra violet light
- Acoustic Properties
Polyethylene plastic film has a major job in offering plastic assurance. It is utilized in development as vapor retarders, window movies, ground surface and ledge security, and even in material. I am polyethylene plastic film supplier so any one need more information about this so fell contact me.
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